5V/12V 30mm 30x30x7mm Sleeve Bearing DC Axial Fan 3007

Parameters                                                                                                

FAQ of DC Cooling Fan                                                                          

1. What is a DC Axial Fan?

An DC fan is usually powered by 3v, 5v, 12v, 24v, 36v and 48v. It blows air along the

axis of the fan, or parallel to the track of the blade axis. Standard DC Axial fan sizes

include 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 92mm,120mm, 150mm,

and 200mm, and shapes of DC cooling fan include square, round, olive shape and so on.

2. How to choose a DC fan?

To choose a DC fan, you should consider the points below

a. fan voltage

b. fan current

c. fan speed

d. fan airflow

e. fan noise

f. fan lifespan

3. What is a bearing?

Fan bearing includes Sleeve Bearing and Ball Bearing, life expectancy of sleeve bearing fan is

30000hours,while ball bearing is 50000hours or more.

4. How do we carry out quality control?

Usually, there are two ways to monitor reliability during the manufacturing process.

a. Early Life Test

This is used as a mean of process control aimed at identifying any latent manufacturing

problems and determining the effectiveness of burn-in. Every day, 5 samples will be

picked up randomly from one of the production lines for burn in at 50°C+/-5°C for 24 hours.

b. On-going Reliability Demonstration

This is a longer-term program aimed at providing data on continuous basis to

demonstrate the reliability of product. 10 units per month are randomly collected

from one of the production lines for burn-in for 168 hours at 50°C+/-5°C.

Units are monitored and tested on daily basis. Failed units will be analyzed

and corrective actions taken where necessary.

5.If you need us to provide connector, the following connector types for your reference.

Please contact us for customized fans.

Contact Person:Veronica

Web: https://meraif.en.alibaba.com

Production Line                                                                                        

Products Safety Test                                                                                 

Drop Test

In minimal packing, fan withstands each one drop of three faces from 30cm distance

height onto 10mm thickness of wooden board

Locked rotor protection

Impedence of motor winding protects fan from fire in 72hours of locked rotor condition

at the rated voltage

Dielectric Strength

Fan can withstand 2500v 2sec 1mA between housing and two leads wire.

Applications of Cooling Fans                                                              

Our products are widely used in welding machines, inverters, ultrasonic wave equipments,

 refrigeration industry, cabinets, network cabinets, LED display screens, electromotor soft  

  starters, air cooler industry, automation equipments, testing equipments, humidifiers,

 ozone  equipments, rectification power supply, projectors, reflow machines, high

 frequency  machines, stage lights, water dispensers, power supply industry, UPS

 power supply, car  DVD, amplifiers, mosquito-killer lamp, car seat/auto pillow/seat

 cushion, switching power supply, car oxygen bar, eliminating static electricity machines,

 model airplanes, graphics  cards, CPUs, coffee machines, electric toys, beauty

instruments, medical equipments,  amusement equipments, electronic equipment and

more than 60 fields like industrial  equipment, life appliances industry,

the entertainment industry, the service industry and so on. .

Packing Details                                                                                    

Our fans will be packed in cartons, if you want special package,please tell us your demands before your order!

Shipping Details                                                                                   

Shipping: by Air, Courier, or Sea